hwmon: (max16064) Add support for peak attributes
[linux-2.6.git] / drivers / hwmon / w83795.c
1 /*
2  *  w83795.c - Linux kernel driver for hardware monitoring
3  *  Copyright (C) 2008 Nuvoton Technology Corp.
4  *                Wei Song
5  *  Copyright (C) 2010 Jean Delvare <khali@linux-fr.org>
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation - version 2.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19  *  02110-1301 USA.
20  *
21  *  Supports following chips:
22  *
23  *  Chip       #vin   #fanin #pwm #temp #dts wchipid  vendid  i2c  ISA
24  *  w83795g     21     14     8     6     8    0x79   0x5ca3  yes   no
25  *  w83795adg   18     14     2     6     8    0x79   0x5ca3  yes   no
26  */
27
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/i2c.h>
33 #include <linux/hwmon.h>
34 #include <linux/hwmon-sysfs.h>
35 #include <linux/err.h>
36 #include <linux/mutex.h>
37 #include <linux/delay.h>
38
39 /* Addresses to scan */
40 static const unsigned short normal_i2c[] = {
41         0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END
42 };
43
44
45 static int reset;
46 module_param(reset, bool, 0);
47 MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
48
49
50 #define W83795_REG_BANKSEL              0x00
51 #define W83795_REG_VENDORID             0xfd
52 #define W83795_REG_CHIPID               0xfe
53 #define W83795_REG_DEVICEID             0xfb
54 #define W83795_REG_DEVICEID_A           0xff
55
56 #define W83795_REG_I2C_ADDR             0xfc
57 #define W83795_REG_CONFIG               0x01
58 #define W83795_REG_CONFIG_CONFIG48      0x04
59 #define W83795_REG_CONFIG_START 0x01
60
61 /* Multi-Function Pin Ctrl Registers */
62 #define W83795_REG_VOLT_CTRL1           0x02
63 #define W83795_REG_VOLT_CTRL2           0x03
64 #define W83795_REG_TEMP_CTRL1           0x04
65 #define W83795_REG_TEMP_CTRL2           0x05
66 #define W83795_REG_FANIN_CTRL1          0x06
67 #define W83795_REG_FANIN_CTRL2          0x07
68 #define W83795_REG_VMIGB_CTRL           0x08
69
70 #define TEMP_READ                       0
71 #define TEMP_CRIT                       1
72 #define TEMP_CRIT_HYST                  2
73 #define TEMP_WARN                       3
74 #define TEMP_WARN_HYST                  4
75 /* only crit and crit_hyst affect real-time alarm status
76  * current crit crit_hyst warn warn_hyst */
77 static const u16 W83795_REG_TEMP[][5] = {
78         {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
79         {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
80         {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
81         {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
82         {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
83         {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
84 };
85
86 #define IN_READ                         0
87 #define IN_MAX                          1
88 #define IN_LOW                          2
89 static const u16 W83795_REG_IN[][3] = {
90         /* Current, HL, LL */
91         {0x10, 0x70, 0x71},     /* VSEN1 */
92         {0x11, 0x72, 0x73},     /* VSEN2 */
93         {0x12, 0x74, 0x75},     /* VSEN3 */
94         {0x13, 0x76, 0x77},     /* VSEN4 */
95         {0x14, 0x78, 0x79},     /* VSEN5 */
96         {0x15, 0x7a, 0x7b},     /* VSEN6 */
97         {0x16, 0x7c, 0x7d},     /* VSEN7 */
98         {0x17, 0x7e, 0x7f},     /* VSEN8 */
99         {0x18, 0x80, 0x81},     /* VSEN9 */
100         {0x19, 0x82, 0x83},     /* VSEN10 */
101         {0x1A, 0x84, 0x85},     /* VSEN11 */
102         {0x1B, 0x86, 0x87},     /* VTT */
103         {0x1C, 0x88, 0x89},     /* 3VDD */
104         {0x1D, 0x8a, 0x8b},     /* 3VSB */
105         {0x1E, 0x8c, 0x8d},     /* VBAT */
106         {0x1F, 0xa6, 0xa7},     /* VSEN12 */
107         {0x20, 0xaa, 0xab},     /* VSEN13 */
108         {0x21, 0x96, 0x97},     /* VSEN14 */
109         {0x22, 0x9a, 0x9b},     /* VSEN15 */
110         {0x23, 0x9e, 0x9f},     /* VSEN16 */
111         {0x24, 0xa2, 0xa3},     /* VSEN17 */
112 };
113 #define W83795_REG_VRLSB                0x3C
114
115 static const u8 W83795_REG_IN_HL_LSB[] = {
116         0x8e,   /* VSEN1-4 */
117         0x90,   /* VSEN5-8 */
118         0x92,   /* VSEN9-11 */
119         0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
120         0xa8,   /* VSEN12 */
121         0xac,   /* VSEN13 */
122         0x98,   /* VSEN14 */
123         0x9c,   /* VSEN15 */
124         0xa0,   /* VSEN16 */
125         0xa4,   /* VSEN17 */
126 };
127
128 #define IN_LSB_REG(index, type) \
129         (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
130         : (W83795_REG_IN_HL_LSB[(index)] + 1))
131
132 #define IN_LSB_SHIFT                    0
133 #define IN_LSB_IDX                      1
134 static const u8 IN_LSB_SHIFT_IDX[][2] = {
135         /* High/Low LSB shift, LSB No. */
136         {0x00, 0x00},   /* VSEN1 */
137         {0x02, 0x00},   /* VSEN2 */
138         {0x04, 0x00},   /* VSEN3 */
139         {0x06, 0x00},   /* VSEN4 */
140         {0x00, 0x01},   /* VSEN5 */
141         {0x02, 0x01},   /* VSEN6 */
142         {0x04, 0x01},   /* VSEN7 */
143         {0x06, 0x01},   /* VSEN8 */
144         {0x00, 0x02},   /* VSEN9 */
145         {0x02, 0x02},   /* VSEN10 */
146         {0x04, 0x02},   /* VSEN11 */
147         {0x00, 0x03},   /* VTT */
148         {0x02, 0x03},   /* 3VDD */
149         {0x04, 0x03},   /* 3VSB */
150         {0x06, 0x03},   /* VBAT */
151         {0x06, 0x04},   /* VSEN12 */
152         {0x06, 0x05},   /* VSEN13 */
153         {0x06, 0x06},   /* VSEN14 */
154         {0x06, 0x07},   /* VSEN15 */
155         {0x06, 0x08},   /* VSEN16 */
156         {0x06, 0x09},   /* VSEN17 */
157 };
158
159
160 #define W83795_REG_FAN(index)           (0x2E + (index))
161 #define W83795_REG_FAN_MIN_HL(index)    (0xB6 + (index))
162 #define W83795_REG_FAN_MIN_LSB(index)   (0xC4 + (index) / 2)
163 #define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
164         (((index) & 1) ? 4 : 0)
165
166 #define W83795_REG_VID_CTRL             0x6A
167
168 #define W83795_REG_ALARM_CTRL           0x40
169 #define ALARM_CTRL_RTSACS               (1 << 7)
170 #define W83795_REG_ALARM(index)         (0x41 + (index))
171 #define W83795_REG_CLR_CHASSIS          0x4D
172 #define W83795_REG_BEEP(index)          (0x50 + (index))
173
174 #define W83795_REG_OVT_CFG              0x58
175 #define OVT_CFG_SEL                     (1 << 7)
176
177
178 #define W83795_REG_FCMS1                0x201
179 #define W83795_REG_FCMS2                0x208
180 #define W83795_REG_TFMR(index)          (0x202 + (index))
181 #define W83795_REG_FOMC                 0x20F
182
183 #define W83795_REG_TSS(index)           (0x209 + (index))
184
185 #define TSS_MAP_RESERVED                0xff
186 static const u8 tss_map[4][6] = {
187         { 0,  1,  2,  3,  4,  5},
188         { 6,  7,  8,  9,  0,  1},
189         {10, 11, 12, 13,  2,  3},
190         { 4,  5,  4,  5, TSS_MAP_RESERVED, TSS_MAP_RESERVED},
191 };
192
193 #define PWM_OUTPUT                      0
194 #define PWM_FREQ                        1
195 #define PWM_START                       2
196 #define PWM_NONSTOP                     3
197 #define PWM_STOP_TIME                   4
198 #define W83795_REG_PWM(index, nr)       (0x210 + (nr) * 8 + (index))
199
200 #define W83795_REG_FTSH(index)          (0x240 + (index) * 2)
201 #define W83795_REG_FTSL(index)          (0x241 + (index) * 2)
202 #define W83795_REG_TFTS                 0x250
203
204 #define TEMP_PWM_TTTI                   0
205 #define TEMP_PWM_CTFS                   1
206 #define TEMP_PWM_HCT                    2
207 #define TEMP_PWM_HOT                    3
208 #define W83795_REG_TTTI(index)          (0x260 + (index))
209 #define W83795_REG_CTFS(index)          (0x268 + (index))
210 #define W83795_REG_HT(index)            (0x270 + (index))
211
212 #define SF4_TEMP                        0
213 #define SF4_PWM                         1
214 #define W83795_REG_SF4_TEMP(temp_num, index) \
215         (0x280 + 0x10 * (temp_num) + (index))
216 #define W83795_REG_SF4_PWM(temp_num, index) \
217         (0x288 + 0x10 * (temp_num) + (index))
218
219 #define W83795_REG_DTSC                 0x301
220 #define W83795_REG_DTSE                 0x302
221 #define W83795_REG_DTS(index)           (0x26 + (index))
222 #define W83795_REG_PECI_TBASE(index)    (0x320 + (index))
223
224 #define DTS_CRIT                        0
225 #define DTS_CRIT_HYST                   1
226 #define DTS_WARN                        2
227 #define DTS_WARN_HYST                   3
228 #define W83795_REG_DTS_EXT(index)       (0xB2 + (index))
229
230 #define SETUP_PWM_DEFAULT               0
231 #define SETUP_PWM_UPTIME                1
232 #define SETUP_PWM_DOWNTIME              2
233 #define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
234
235 static inline u16 in_from_reg(u8 index, u16 val)
236 {
237         /* 3VDD, 3VSB and VBAT: 6 mV/bit; other inputs: 2 mV/bit */
238         if (index >= 12 && index <= 14)
239                 return val * 6;
240         else
241                 return val * 2;
242 }
243
244 static inline u16 in_to_reg(u8 index, u16 val)
245 {
246         if (index >= 12 && index <= 14)
247                 return val / 6;
248         else
249                 return val / 2;
250 }
251
252 static inline unsigned long fan_from_reg(u16 val)
253 {
254         if ((val == 0xfff) || (val == 0))
255                 return 0;
256         return 1350000UL / val;
257 }
258
259 static inline u16 fan_to_reg(long rpm)
260 {
261         if (rpm <= 0)
262                 return 0x0fff;
263         return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
264 }
265
266 static inline unsigned long time_from_reg(u8 reg)
267 {
268         return reg * 100;
269 }
270
271 static inline u8 time_to_reg(unsigned long val)
272 {
273         return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
274 }
275
276 static inline long temp_from_reg(s8 reg)
277 {
278         return reg * 1000;
279 }
280
281 static inline s8 temp_to_reg(long val, s8 min, s8 max)
282 {
283         return SENSORS_LIMIT(val / 1000, min, max);
284 }
285
286 static const u16 pwm_freq_cksel0[16] = {
287         1024, 512, 341, 256, 205, 171, 146, 128,
288         85, 64, 32, 16, 8, 4, 2, 1
289 };
290
291 static unsigned int pwm_freq_from_reg(u8 reg, u16 clkin)
292 {
293         unsigned long base_clock;
294
295         if (reg & 0x80) {
296                 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
297                 return base_clock / ((reg & 0x7f) + 1);
298         } else
299                 return pwm_freq_cksel0[reg & 0x0f];
300 }
301
302 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
303 {
304         unsigned long base_clock;
305         u8 reg0, reg1;
306         unsigned long best0, best1;
307
308         /* Best fit for cksel = 0 */
309         for (reg0 = 0; reg0 < ARRAY_SIZE(pwm_freq_cksel0) - 1; reg0++) {
310                 if (val > (pwm_freq_cksel0[reg0] +
311                            pwm_freq_cksel0[reg0 + 1]) / 2)
312                         break;
313         }
314         if (val < 375)  /* cksel = 1 can't beat this */
315                 return reg0;
316         best0 = pwm_freq_cksel0[reg0];
317
318         /* Best fit for cksel = 1 */
319         base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
320         reg1 = SENSORS_LIMIT(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
321         best1 = base_clock / reg1;
322         reg1 = 0x80 | (reg1 - 1);
323
324         /* Choose the closest one */
325         if (abs(val - best0) > abs(val - best1))
326                 return reg1;
327         else
328                 return reg0;
329 }
330
331 enum chip_types {w83795g, w83795adg};
332
333 struct w83795_data {
334         struct device *hwmon_dev;
335         struct mutex update_lock;
336         unsigned long last_updated;     /* In jiffies */
337         enum chip_types chip_type;
338
339         u8 bank;
340
341         u32 has_in;             /* Enable monitor VIN or not */
342         u8 has_dyn_in;          /* Only in2-0 can have this */
343         u16 in[21][3];          /* Register value, read/high/low */
344         u8 in_lsb[10][3];       /* LSB Register value, high/low */
345         u8 has_gain;            /* has gain: in17-20 * 8 */
346
347         u16 has_fan;            /* Enable fan14-1 or not */
348         u16 fan[14];            /* Register value combine */
349         u16 fan_min[14];        /* Register value combine */
350
351         u8 has_temp;            /* Enable monitor temp6-1 or not */
352         s8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
353         u8 temp_read_vrlsb[6];
354         u8 temp_mode;           /* Bit vector, 0 = TR, 1 = TD */
355         u8 temp_src[3];         /* Register value */
356
357         u8 enable_dts;          /* Enable PECI and SB-TSI,
358                                  * bit 0: =1 enable, =0 disable,
359                                  * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
360         u8 has_dts;             /* Enable monitor DTS temp */
361         s8 dts[8];              /* Register value */
362         u8 dts_read_vrlsb[8];   /* Register value */
363         s8 dts_ext[4];          /* Register value */
364
365         u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
366                                  * no config register, only affected by chip
367                                  * type */
368         u8 pwm[8][5];           /* Register value, output, freq, start,
369                                  *  non stop, stop time */
370         u16 clkin;              /* CLKIN frequency in kHz */
371         u8 pwm_fcms[2];         /* Register value */
372         u8 pwm_tfmr[6];         /* Register value */
373         u8 pwm_fomc;            /* Register value */
374
375         u16 target_speed[8];    /* Register value, target speed for speed
376                                  * cruise */
377         u8 tol_speed;           /* tolerance of target speed */
378         u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
379         u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
380
381         u8 setup_pwm[3];        /* Register value */
382
383         u8 alarms[6];           /* Register value */
384         u8 enable_beep;
385         u8 beeps[6];            /* Register value */
386
387         char valid;
388         char valid_limits;
389         char valid_pwm_config;
390 };
391
392 /*
393  * Hardware access
394  * We assume that nobdody can change the bank outside the driver.
395  */
396
397 /* Must be called with data->update_lock held, except during initialization */
398 static int w83795_set_bank(struct i2c_client *client, u8 bank)
399 {
400         struct w83795_data *data = i2c_get_clientdata(client);
401         int err;
402
403         /* If the same bank is already set, nothing to do */
404         if ((data->bank & 0x07) == bank)
405                 return 0;
406
407         /* Change to new bank, preserve all other bits */
408         bank |= data->bank & ~0x07;
409         err = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL, bank);
410         if (err < 0) {
411                 dev_err(&client->dev,
412                         "Failed to set bank to %d, err %d\n",
413                         (int)bank, err);
414                 return err;
415         }
416         data->bank = bank;
417
418         return 0;
419 }
420
421 /* Must be called with data->update_lock held, except during initialization */
422 static u8 w83795_read(struct i2c_client *client, u16 reg)
423 {
424         int err;
425
426         err = w83795_set_bank(client, reg >> 8);
427         if (err < 0)
428                 return 0x00;    /* Arbitrary */
429
430         err = i2c_smbus_read_byte_data(client, reg & 0xff);
431         if (err < 0) {
432                 dev_err(&client->dev,
433                         "Failed to read from register 0x%03x, err %d\n",
434                         (int)reg, err);
435                 return 0x00;    /* Arbitrary */
436         }
437         return err;
438 }
439
440 /* Must be called with data->update_lock held, except during initialization */
441 static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
442 {
443         int err;
444
445         err = w83795_set_bank(client, reg >> 8);
446         if (err < 0)
447                 return err;
448
449         err = i2c_smbus_write_byte_data(client, reg & 0xff, value);
450         if (err < 0)
451                 dev_err(&client->dev,
452                         "Failed to write to register 0x%03x, err %d\n",
453                         (int)reg, err);
454         return err;
455 }
456
457 static void w83795_update_limits(struct i2c_client *client)
458 {
459         struct w83795_data *data = i2c_get_clientdata(client);
460         int i, limit;
461         u8 lsb;
462
463         /* Read the voltage limits */
464         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
465                 if (!(data->has_in & (1 << i)))
466                         continue;
467                 data->in[i][IN_MAX] =
468                         w83795_read(client, W83795_REG_IN[i][IN_MAX]);
469                 data->in[i][IN_LOW] =
470                         w83795_read(client, W83795_REG_IN[i][IN_LOW]);
471         }
472         for (i = 0; i < ARRAY_SIZE(data->in_lsb); i++) {
473                 if ((i == 2 && data->chip_type == w83795adg) ||
474                     (i >= 4 && !(data->has_in & (1 << (i + 11)))))
475                         continue;
476                 data->in_lsb[i][IN_MAX] =
477                         w83795_read(client, IN_LSB_REG(i, IN_MAX));
478                 data->in_lsb[i][IN_LOW] =
479                         w83795_read(client, IN_LSB_REG(i, IN_LOW));
480         }
481
482         /* Read the fan limits */
483         lsb = 0; /* Silent false gcc warning */
484         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
485                 /* Each register contains LSB for 2 fans, but we want to
486                  * read it only once to save time */
487                 if ((i & 1) == 0 && (data->has_fan & (3 << i)))
488                         lsb = w83795_read(client, W83795_REG_FAN_MIN_LSB(i));
489
490                 if (!(data->has_fan & (1 << i)))
491                         continue;
492                 data->fan_min[i] =
493                         w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
494                 data->fan_min[i] |=
495                         (lsb >> W83795_REG_FAN_MIN_LSB_SHIFT(i)) & 0x0F;
496         }
497
498         /* Read the temperature limits */
499         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
500                 if (!(data->has_temp & (1 << i)))
501                         continue;
502                 for (limit = TEMP_CRIT; limit <= TEMP_WARN_HYST; limit++)
503                         data->temp[i][limit] =
504                                 w83795_read(client, W83795_REG_TEMP[i][limit]);
505         }
506
507         /* Read the DTS limits */
508         if (data->enable_dts) {
509                 for (limit = DTS_CRIT; limit <= DTS_WARN_HYST; limit++)
510                         data->dts_ext[limit] =
511                                 w83795_read(client, W83795_REG_DTS_EXT(limit));
512         }
513
514         /* Read beep settings */
515         if (data->enable_beep) {
516                 for (i = 0; i < ARRAY_SIZE(data->beeps); i++)
517                         data->beeps[i] =
518                                 w83795_read(client, W83795_REG_BEEP(i));
519         }
520
521         data->valid_limits = 1;
522 }
523
524 static struct w83795_data *w83795_update_pwm_config(struct device *dev)
525 {
526         struct i2c_client *client = to_i2c_client(dev);
527         struct w83795_data *data = i2c_get_clientdata(client);
528         int i, tmp;
529
530         mutex_lock(&data->update_lock);
531
532         if (data->valid_pwm_config)
533                 goto END;
534
535         /* Read temperature source selection */
536         for (i = 0; i < ARRAY_SIZE(data->temp_src); i++)
537                 data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
538
539         /* Read automatic fan speed control settings */
540         data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
541         data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
542         for (i = 0; i < ARRAY_SIZE(data->pwm_tfmr); i++)
543                 data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
544         data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
545         for (i = 0; i < data->has_pwm; i++) {
546                 for (tmp = PWM_FREQ; tmp <= PWM_STOP_TIME; tmp++)
547                         data->pwm[i][tmp] =
548                                 w83795_read(client, W83795_REG_PWM(i, tmp));
549         }
550         for (i = 0; i < ARRAY_SIZE(data->target_speed); i++) {
551                 data->target_speed[i] =
552                         w83795_read(client, W83795_REG_FTSH(i)) << 4;
553                 data->target_speed[i] |=
554                         w83795_read(client, W83795_REG_FTSL(i)) >> 4;
555         }
556         data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
557
558         for (i = 0; i < ARRAY_SIZE(data->pwm_temp); i++) {
559                 data->pwm_temp[i][TEMP_PWM_TTTI] =
560                         w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
561                 data->pwm_temp[i][TEMP_PWM_CTFS] =
562                         w83795_read(client, W83795_REG_CTFS(i));
563                 tmp = w83795_read(client, W83795_REG_HT(i));
564                 data->pwm_temp[i][TEMP_PWM_HCT] = tmp >> 4;
565                 data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
566         }
567
568         /* Read SmartFanIV trip points */
569         for (i = 0; i < ARRAY_SIZE(data->sf4_reg); i++) {
570                 for (tmp = 0; tmp < 7; tmp++) {
571                         data->sf4_reg[i][SF4_TEMP][tmp] =
572                                 w83795_read(client,
573                                             W83795_REG_SF4_TEMP(i, tmp));
574                         data->sf4_reg[i][SF4_PWM][tmp] =
575                                 w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
576                 }
577         }
578
579         /* Read setup PWM */
580         for (i = 0; i < ARRAY_SIZE(data->setup_pwm); i++)
581                 data->setup_pwm[i] =
582                         w83795_read(client, W83795_REG_SETUP_PWM(i));
583
584         data->valid_pwm_config = 1;
585
586 END:
587         mutex_unlock(&data->update_lock);
588         return data;
589 }
590
591 static struct w83795_data *w83795_update_device(struct device *dev)
592 {
593         struct i2c_client *client = to_i2c_client(dev);
594         struct w83795_data *data = i2c_get_clientdata(client);
595         u16 tmp;
596         u8 intrusion;
597         int i;
598
599         mutex_lock(&data->update_lock);
600
601         if (!data->valid_limits)
602                 w83795_update_limits(client);
603
604         if (!(time_after(jiffies, data->last_updated + HZ * 2)
605               || !data->valid))
606                 goto END;
607
608         /* Update the voltages value */
609         for (i = 0; i < ARRAY_SIZE(data->in); i++) {
610                 if (!(data->has_in & (1 << i)))
611                         continue;
612                 tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
613                 tmp |= w83795_read(client, W83795_REG_VRLSB) >> 6;
614                 data->in[i][IN_READ] = tmp;
615         }
616
617         /* in0-2 can have dynamic limits (W83795G only) */
618         if (data->has_dyn_in) {
619                 u8 lsb_max = w83795_read(client, IN_LSB_REG(0, IN_MAX));
620                 u8 lsb_low = w83795_read(client, IN_LSB_REG(0, IN_LOW));
621
622                 for (i = 0; i < 3; i++) {
623                         if (!(data->has_dyn_in & (1 << i)))
624                                 continue;
625                         data->in[i][IN_MAX] =
626                                 w83795_read(client, W83795_REG_IN[i][IN_MAX]);
627                         data->in[i][IN_LOW] =
628                                 w83795_read(client, W83795_REG_IN[i][IN_LOW]);
629                         data->in_lsb[i][IN_MAX] = (lsb_max >> (2 * i)) & 0x03;
630                         data->in_lsb[i][IN_LOW] = (lsb_low >> (2 * i)) & 0x03;
631                 }
632         }
633
634         /* Update fan */
635         for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
636                 if (!(data->has_fan & (1 << i)))
637                         continue;
638                 data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
639                 data->fan[i] |= w83795_read(client, W83795_REG_VRLSB) >> 4;
640         }
641
642         /* Update temperature */
643         for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
644                 data->temp[i][TEMP_READ] =
645                         w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
646                 data->temp_read_vrlsb[i] =
647                         w83795_read(client, W83795_REG_VRLSB);
648         }
649
650         /* Update dts temperature */
651         if (data->enable_dts) {
652                 for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
653                         if (!(data->has_dts & (1 << i)))
654                                 continue;
655                         data->dts[i] =
656                                 w83795_read(client, W83795_REG_DTS(i));
657                         data->dts_read_vrlsb[i] =
658                                 w83795_read(client, W83795_REG_VRLSB);
659                 }
660         }
661
662         /* Update pwm output */
663         for (i = 0; i < data->has_pwm; i++) {
664                 data->pwm[i][PWM_OUTPUT] =
665                     w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
666         }
667
668         /* Update intrusion and alarms
669          * It is important to read intrusion first, because reading from
670          * register SMI STS6 clears the interrupt status temporarily. */
671         tmp = w83795_read(client, W83795_REG_ALARM_CTRL);
672         /* Switch to interrupt status for intrusion if needed */
673         if (tmp & ALARM_CTRL_RTSACS)
674                 w83795_write(client, W83795_REG_ALARM_CTRL,
675                              tmp & ~ALARM_CTRL_RTSACS);
676         intrusion = w83795_read(client, W83795_REG_ALARM(5)) & (1 << 6);
677         /* Switch to real-time alarms */
678         w83795_write(client, W83795_REG_ALARM_CTRL, tmp | ALARM_CTRL_RTSACS);
679         for (i = 0; i < ARRAY_SIZE(data->alarms); i++)
680                 data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
681         data->alarms[5] |= intrusion;
682         /* Restore original configuration if needed */
683         if (!(tmp & ALARM_CTRL_RTSACS))
684                 w83795_write(client, W83795_REG_ALARM_CTRL,
685                              tmp & ~ALARM_CTRL_RTSACS);
686
687         data->last_updated = jiffies;
688         data->valid = 1;
689
690 END:
691         mutex_unlock(&data->update_lock);
692         return data;
693 }
694
695 /*
696  * Sysfs attributes
697  */
698
699 #define ALARM_STATUS      0
700 #define BEEP_ENABLE       1
701 static ssize_t
702 show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
703 {
704         struct w83795_data *data = w83795_update_device(dev);
705         struct sensor_device_attribute_2 *sensor_attr =
706             to_sensor_dev_attr_2(attr);
707         int nr = sensor_attr->nr;
708         int index = sensor_attr->index >> 3;
709         int bit = sensor_attr->index & 0x07;
710         u8 val;
711
712         if (nr == ALARM_STATUS)
713                 val = (data->alarms[index] >> bit) & 1;
714         else            /* BEEP_ENABLE */
715                 val = (data->beeps[index] >> bit) & 1;
716
717         return sprintf(buf, "%u\n", val);
718 }
719
720 static ssize_t
721 store_beep(struct device *dev, struct device_attribute *attr,
722            const char *buf, size_t count)
723 {
724         struct i2c_client *client = to_i2c_client(dev);
725         struct w83795_data *data = i2c_get_clientdata(client);
726         struct sensor_device_attribute_2 *sensor_attr =
727             to_sensor_dev_attr_2(attr);
728         int index = sensor_attr->index >> 3;
729         int shift = sensor_attr->index & 0x07;
730         u8 beep_bit = 1 << shift;
731         unsigned long val;
732
733         if (strict_strtoul(buf, 10, &val) < 0)
734                 return -EINVAL;
735         if (val != 0 && val != 1)
736                 return -EINVAL;
737
738         mutex_lock(&data->update_lock);
739         data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
740         data->beeps[index] &= ~beep_bit;
741         data->beeps[index] |= val << shift;
742         w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
743         mutex_unlock(&data->update_lock);
744
745         return count;
746 }
747
748 /* Write 0 to clear chassis alarm */
749 static ssize_t
750 store_chassis_clear(struct device *dev,
751                     struct device_attribute *attr, const char *buf,
752                     size_t count)
753 {
754         struct i2c_client *client = to_i2c_client(dev);
755         struct w83795_data *data = i2c_get_clientdata(client);
756         unsigned long val;
757
758         if (strict_strtoul(buf, 10, &val) < 0 || val != 0)
759                 return -EINVAL;
760
761         mutex_lock(&data->update_lock);
762         val = w83795_read(client, W83795_REG_CLR_CHASSIS);
763         val |= 0x80;
764         w83795_write(client, W83795_REG_CLR_CHASSIS, val);
765
766         /* Clear status and force cache refresh */
767         w83795_read(client, W83795_REG_ALARM(5));
768         data->valid = 0;
769         mutex_unlock(&data->update_lock);
770         return count;
771 }
772
773 #define FAN_INPUT     0
774 #define FAN_MIN       1
775 static ssize_t
776 show_fan(struct device *dev, struct device_attribute *attr, char *buf)
777 {
778         struct sensor_device_attribute_2 *sensor_attr =
779             to_sensor_dev_attr_2(attr);
780         int nr = sensor_attr->nr;
781         int index = sensor_attr->index;
782         struct w83795_data *data = w83795_update_device(dev);
783         u16 val;
784
785         if (nr == FAN_INPUT)
786                 val = data->fan[index] & 0x0fff;
787         else
788                 val = data->fan_min[index] & 0x0fff;
789
790         return sprintf(buf, "%lu\n", fan_from_reg(val));
791 }
792
793 static ssize_t
794 store_fan_min(struct device *dev, struct device_attribute *attr,
795               const char *buf, size_t count)
796 {
797         struct sensor_device_attribute_2 *sensor_attr =
798             to_sensor_dev_attr_2(attr);
799         int index = sensor_attr->index;
800         struct i2c_client *client = to_i2c_client(dev);
801         struct w83795_data *data = i2c_get_clientdata(client);
802         unsigned long val;
803
804         if (strict_strtoul(buf, 10, &val))
805                 return -EINVAL;
806         val = fan_to_reg(val);
807
808         mutex_lock(&data->update_lock);
809         data->fan_min[index] = val;
810         w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
811         val &= 0x0f;
812         if (index & 1) {
813                 val <<= 4;
814                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
815                        & 0x0f;
816         } else {
817                 val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
818                        & 0xf0;
819         }
820         w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
821         mutex_unlock(&data->update_lock);
822
823         return count;
824 }
825
826 static ssize_t
827 show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
828 {
829         struct w83795_data *data;
830         struct sensor_device_attribute_2 *sensor_attr =
831             to_sensor_dev_attr_2(attr);
832         int nr = sensor_attr->nr;
833         int index = sensor_attr->index;
834         unsigned int val;
835
836         data = nr == PWM_OUTPUT ? w83795_update_device(dev)
837                                 : w83795_update_pwm_config(dev);
838
839         switch (nr) {
840         case PWM_STOP_TIME:
841                 val = time_from_reg(data->pwm[index][nr]);
842                 break;
843         case PWM_FREQ:
844                 val = pwm_freq_from_reg(data->pwm[index][nr], data->clkin);
845                 break;
846         default:
847                 val = data->pwm[index][nr];
848                 break;
849         }
850
851         return sprintf(buf, "%u\n", val);
852 }
853
854 static ssize_t
855 store_pwm(struct device *dev, struct device_attribute *attr,
856           const char *buf, size_t count)
857 {
858         struct i2c_client *client = to_i2c_client(dev);
859         struct w83795_data *data = i2c_get_clientdata(client);
860         struct sensor_device_attribute_2 *sensor_attr =
861             to_sensor_dev_attr_2(attr);
862         int nr = sensor_attr->nr;
863         int index = sensor_attr->index;
864         unsigned long val;
865
866         if (strict_strtoul(buf, 10, &val) < 0)
867                 return -EINVAL;
868
869         mutex_lock(&data->update_lock);
870         switch (nr) {
871         case PWM_STOP_TIME:
872                 val = time_to_reg(val);
873                 break;
874         case PWM_FREQ:
875                 val = pwm_freq_to_reg(val, data->clkin);
876                 break;
877         default:
878                 val = SENSORS_LIMIT(val, 0, 0xff);
879                 break;
880         }
881         w83795_write(client, W83795_REG_PWM(index, nr), val);
882         data->pwm[index][nr] = val;
883         mutex_unlock(&data->update_lock);
884         return count;
885 }
886
887 static ssize_t
888 show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
889 {
890         struct sensor_device_attribute_2 *sensor_attr =
891             to_sensor_dev_attr_2(attr);
892         struct w83795_data *data = w83795_update_pwm_config(dev);
893         int index = sensor_attr->index;
894         u8 tmp;
895
896         /* Speed cruise mode */
897         if (data->pwm_fcms[0] & (1 << index)) {
898                 tmp = 2;
899                 goto out;
900         }
901         /* Thermal cruise or SmartFan IV mode */
902         for (tmp = 0; tmp < 6; tmp++) {
903                 if (data->pwm_tfmr[tmp] & (1 << index)) {
904                         tmp = 3;
905                         goto out;
906                 }
907         }
908         /* Manual mode */
909         tmp = 1;
910
911 out:
912         return sprintf(buf, "%u\n", tmp);
913 }
914
915 static ssize_t
916 store_pwm_enable(struct device *dev, struct device_attribute *attr,
917           const char *buf, size_t count)
918 {
919         struct i2c_client *client = to_i2c_client(dev);
920         struct w83795_data *data = w83795_update_pwm_config(dev);
921         struct sensor_device_attribute_2 *sensor_attr =
922             to_sensor_dev_attr_2(attr);
923         int index = sensor_attr->index;
924         unsigned long val;
925         int i;
926
927         if (strict_strtoul(buf, 10, &val) < 0)
928                 return -EINVAL;
929         if (val < 1 || val > 2)
930                 return -EINVAL;
931
932         mutex_lock(&data->update_lock);
933         switch (val) {
934         case 1:
935                 /* Clear speed cruise mode bits */
936                 data->pwm_fcms[0] &= ~(1 << index);
937                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
938                 /* Clear thermal cruise mode bits */
939                 for (i = 0; i < 6; i++) {
940                         data->pwm_tfmr[i] &= ~(1 << index);
941                         w83795_write(client, W83795_REG_TFMR(i),
942                                 data->pwm_tfmr[i]);
943                 }
944                 break;
945         case 2:
946                 data->pwm_fcms[0] |= (1 << index);
947                 w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
948                 break;
949         }
950         mutex_unlock(&data->update_lock);
951         return count;
952 }
953
954 static ssize_t
955 show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
956 {
957         struct w83795_data *data = w83795_update_pwm_config(dev);
958         int index = to_sensor_dev_attr_2(attr)->index;
959         unsigned int mode;
960
961         if (data->pwm_fomc & (1 << index))
962                 mode = 0;       /* DC */
963         else
964                 mode = 1;       /* PWM */
965
966         return sprintf(buf, "%u\n", mode);
967 }
968
969 /*
970  * Check whether a given temperature source can ever be useful.
971  * Returns the number of selectable temperature channels which are
972  * enabled.
973  */
974 static int w83795_tss_useful(const struct w83795_data *data, int tsrc)
975 {
976         int useful = 0, i;
977
978         for (i = 0; i < 4; i++) {
979                 if (tss_map[i][tsrc] == TSS_MAP_RESERVED)
980                         continue;
981                 if (tss_map[i][tsrc] < 6)       /* Analog */
982                         useful += (data->has_temp >> tss_map[i][tsrc]) & 1;
983                 else                            /* Digital */
984                         useful += (data->has_dts >> (tss_map[i][tsrc] - 6)) & 1;
985         }
986
987         return useful;
988 }
989
990 static ssize_t
991 show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
992 {
993         struct sensor_device_attribute_2 *sensor_attr =
994             to_sensor_dev_attr_2(attr);
995         struct w83795_data *data = w83795_update_pwm_config(dev);
996         int index = sensor_attr->index;
997         u8 tmp = data->temp_src[index / 2];
998
999         if (index & 1)
1000                 tmp >>= 4;      /* Pick high nibble */
1001         else
1002                 tmp &= 0x0f;    /* Pick low nibble */
1003
1004         /* Look-up the actual temperature channel number */
1005         if (tmp >= 4 || tss_map[tmp][index] == TSS_MAP_RESERVED)
1006                 return -EINVAL;         /* Shouldn't happen */
1007
1008         return sprintf(buf, "%u\n", (unsigned int)tss_map[tmp][index] + 1);
1009 }
1010
1011 static ssize_t
1012 store_temp_src(struct device *dev, struct device_attribute *attr,
1013           const char *buf, size_t count)
1014 {
1015         struct i2c_client *client = to_i2c_client(dev);
1016         struct w83795_data *data = w83795_update_pwm_config(dev);
1017         struct sensor_device_attribute_2 *sensor_attr =
1018             to_sensor_dev_attr_2(attr);
1019         int index = sensor_attr->index;
1020         int tmp;
1021         unsigned long channel;
1022         u8 val = index / 2;
1023
1024         if (strict_strtoul(buf, 10, &channel) < 0 ||
1025             channel < 1 || channel > 14)
1026                 return -EINVAL;
1027
1028         /* Check if request can be fulfilled */
1029         for (tmp = 0; tmp < 4; tmp++) {
1030                 if (tss_map[tmp][index] == channel - 1)
1031                         break;
1032         }
1033         if (tmp == 4)   /* No match */
1034                 return -EINVAL;
1035
1036         mutex_lock(&data->update_lock);
1037         if (index & 1) {
1038                 tmp <<= 4;
1039                 data->temp_src[val] &= 0x0f;
1040         } else {
1041                 data->temp_src[val] &= 0xf0;
1042         }
1043         data->temp_src[val] |= tmp;
1044         w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
1045         mutex_unlock(&data->update_lock);
1046
1047         return count;
1048 }
1049
1050 #define TEMP_PWM_ENABLE   0
1051 #define TEMP_PWM_FAN_MAP  1
1052 static ssize_t
1053 show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1054                      char *buf)
1055 {
1056         struct w83795_data *data = w83795_update_pwm_config(dev);
1057         struct sensor_device_attribute_2 *sensor_attr =
1058             to_sensor_dev_attr_2(attr);
1059         int nr = sensor_attr->nr;
1060         int index = sensor_attr->index;
1061         u8 tmp = 0xff;
1062
1063         switch (nr) {
1064         case TEMP_PWM_ENABLE:
1065                 tmp = (data->pwm_fcms[1] >> index) & 1;
1066                 if (tmp)
1067                         tmp = 4;
1068                 else
1069                         tmp = 3;
1070                 break;
1071         case TEMP_PWM_FAN_MAP:
1072                 tmp = data->pwm_tfmr[index];
1073                 break;
1074         }
1075
1076         return sprintf(buf, "%u\n", tmp);
1077 }
1078
1079 static ssize_t
1080 store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
1081           const char *buf, size_t count)
1082 {
1083         struct i2c_client *client = to_i2c_client(dev);
1084         struct w83795_data *data = w83795_update_pwm_config(dev);
1085         struct sensor_device_attribute_2 *sensor_attr =
1086             to_sensor_dev_attr_2(attr);
1087         int nr = sensor_attr->nr;
1088         int index = sensor_attr->index;
1089         unsigned long tmp;
1090
1091         if (strict_strtoul(buf, 10, &tmp) < 0)
1092                 return -EINVAL;
1093
1094         switch (nr) {
1095         case TEMP_PWM_ENABLE:
1096                 if (tmp != 3 && tmp != 4)
1097                         return -EINVAL;
1098                 tmp -= 3;
1099                 mutex_lock(&data->update_lock);
1100                 data->pwm_fcms[1] &= ~(1 << index);
1101                 data->pwm_fcms[1] |= tmp << index;
1102                 w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
1103                 mutex_unlock(&data->update_lock);
1104                 break;
1105         case TEMP_PWM_FAN_MAP:
1106                 mutex_lock(&data->update_lock);
1107                 tmp = SENSORS_LIMIT(tmp, 0, 0xff);
1108                 w83795_write(client, W83795_REG_TFMR(index), tmp);
1109                 data->pwm_tfmr[index] = tmp;
1110                 mutex_unlock(&data->update_lock);
1111                 break;
1112         }
1113         return count;
1114 }
1115
1116 #define FANIN_TARGET   0
1117 #define FANIN_TOL      1
1118 static ssize_t
1119 show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
1120 {
1121         struct w83795_data *data = w83795_update_pwm_config(dev);
1122         struct sensor_device_attribute_2 *sensor_attr =
1123             to_sensor_dev_attr_2(attr);
1124         int nr = sensor_attr->nr;
1125         int index = sensor_attr->index;
1126         u16 tmp = 0;
1127
1128         switch (nr) {
1129         case FANIN_TARGET:
1130                 tmp = fan_from_reg(data->target_speed[index]);
1131                 break;
1132         case FANIN_TOL:
1133                 tmp = data->tol_speed;
1134                 break;
1135         }
1136
1137         return sprintf(buf, "%u\n", tmp);
1138 }
1139
1140 static ssize_t
1141 store_fanin(struct device *dev, struct device_attribute *attr,
1142           const char *buf, size_t count)
1143 {
1144         struct i2c_client *client = to_i2c_client(dev);
1145         struct w83795_data *data = i2c_get_clientdata(client);
1146         struct sensor_device_attribute_2 *sensor_attr =
1147             to_sensor_dev_attr_2(attr);
1148         int nr = sensor_attr->nr;
1149         int index = sensor_attr->index;
1150         unsigned long val;
1151
1152         if (strict_strtoul(buf, 10, &val) < 0)
1153                 return -EINVAL;
1154
1155         mutex_lock(&data->update_lock);
1156         switch (nr) {
1157         case FANIN_TARGET:
1158                 val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
1159                 w83795_write(client, W83795_REG_FTSH(index), val >> 4);
1160                 w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
1161                 data->target_speed[index] = val;
1162                 break;
1163         case FANIN_TOL:
1164                 val = SENSORS_LIMIT(val, 0, 0x3f);
1165                 w83795_write(client, W83795_REG_TFTS, val);
1166                 data->tol_speed = val;
1167                 break;
1168         }
1169         mutex_unlock(&data->update_lock);
1170
1171         return count;
1172 }
1173
1174
1175 static ssize_t
1176 show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1177 {
1178         struct w83795_data *data = w83795_update_pwm_config(dev);
1179         struct sensor_device_attribute_2 *sensor_attr =
1180             to_sensor_dev_attr_2(attr);
1181         int nr = sensor_attr->nr;
1182         int index = sensor_attr->index;
1183         long tmp = temp_from_reg(data->pwm_temp[index][nr]);
1184
1185         return sprintf(buf, "%ld\n", tmp);
1186 }
1187
1188 static ssize_t
1189 store_temp_pwm(struct device *dev, struct device_attribute *attr,
1190           const char *buf, size_t count)
1191 {
1192         struct i2c_client *client = to_i2c_client(dev);
1193         struct w83795_data *data = i2c_get_clientdata(client);
1194         struct sensor_device_attribute_2 *sensor_attr =
1195             to_sensor_dev_attr_2(attr);
1196         int nr = sensor_attr->nr;
1197         int index = sensor_attr->index;
1198         unsigned long val;
1199         u8 tmp;
1200
1201         if (strict_strtoul(buf, 10, &val) < 0)
1202                 return -EINVAL;
1203         val /= 1000;
1204
1205         mutex_lock(&data->update_lock);
1206         switch (nr) {
1207         case TEMP_PWM_TTTI:
1208                 val = SENSORS_LIMIT(val, 0, 0x7f);
1209                 w83795_write(client, W83795_REG_TTTI(index), val);
1210                 break;
1211         case TEMP_PWM_CTFS:
1212                 val = SENSORS_LIMIT(val, 0, 0x7f);
1213                 w83795_write(client, W83795_REG_CTFS(index), val);
1214                 break;
1215         case TEMP_PWM_HCT:
1216                 val = SENSORS_LIMIT(val, 0, 0x0f);
1217                 tmp = w83795_read(client, W83795_REG_HT(index));
1218                 tmp &= 0x0f;
1219                 tmp |= (val << 4) & 0xf0;
1220                 w83795_write(client, W83795_REG_HT(index), tmp);
1221                 break;
1222         case TEMP_PWM_HOT:
1223                 val = SENSORS_LIMIT(val, 0, 0x0f);
1224                 tmp = w83795_read(client, W83795_REG_HT(index));
1225                 tmp &= 0xf0;
1226                 tmp |= val & 0x0f;
1227                 w83795_write(client, W83795_REG_HT(index), tmp);
1228                 break;
1229         }
1230         data->pwm_temp[index][nr] = val;
1231         mutex_unlock(&data->update_lock);
1232
1233         return count;
1234 }
1235
1236 static ssize_t
1237 show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
1238 {
1239         struct w83795_data *data = w83795_update_pwm_config(dev);
1240         struct sensor_device_attribute_2 *sensor_attr =
1241             to_sensor_dev_attr_2(attr);
1242         int nr = sensor_attr->nr;
1243         int index = sensor_attr->index;
1244
1245         return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
1246 }
1247
1248 static ssize_t
1249 store_sf4_pwm(struct device *dev, struct device_attribute *attr,
1250           const char *buf, size_t count)
1251 {
1252         struct i2c_client *client = to_i2c_client(dev);
1253         struct w83795_data *data = i2c_get_clientdata(client);
1254         struct sensor_device_attribute_2 *sensor_attr =
1255             to_sensor_dev_attr_2(attr);
1256         int nr = sensor_attr->nr;
1257         int index = sensor_attr->index;
1258         unsigned long val;
1259
1260         if (strict_strtoul(buf, 10, &val) < 0)
1261                 return -EINVAL;
1262
1263         mutex_lock(&data->update_lock);
1264         w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
1265         data->sf4_reg[index][SF4_PWM][nr] = val;
1266         mutex_unlock(&data->update_lock);
1267
1268         return count;
1269 }
1270
1271 static ssize_t
1272 show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
1273 {
1274         struct w83795_data *data = w83795_update_pwm_config(dev);
1275         struct sensor_device_attribute_2 *sensor_attr =
1276             to_sensor_dev_attr_2(attr);
1277         int nr = sensor_attr->nr;
1278         int index = sensor_attr->index;
1279
1280         return sprintf(buf, "%u\n",
1281                 (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
1282 }
1283
1284 static ssize_t
1285 store_sf4_temp(struct device *dev, struct device_attribute *attr,
1286           const char *buf, size_t count)
1287 {
1288         struct i2c_client *client = to_i2c_client(dev);
1289         struct w83795_data *data = i2c_get_clientdata(client);
1290         struct sensor_device_attribute_2 *sensor_attr =
1291             to_sensor_dev_attr_2(attr);
1292         int nr = sensor_attr->nr;
1293         int index = sensor_attr->index;
1294         unsigned long val;
1295
1296         if (strict_strtoul(buf, 10, &val) < 0)
1297                 return -EINVAL;
1298         val /= 1000;
1299
1300         mutex_lock(&data->update_lock);
1301         w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
1302         data->sf4_reg[index][SF4_TEMP][nr] = val;
1303         mutex_unlock(&data->update_lock);
1304
1305         return count;
1306 }
1307
1308
1309 static ssize_t
1310 show_temp(struct device *dev, struct device_attribute *attr, char *buf)
1311 {
1312         struct sensor_device_attribute_2 *sensor_attr =
1313             to_sensor_dev_attr_2(attr);
1314         int nr = sensor_attr->nr;
1315         int index = sensor_attr->index;
1316         struct w83795_data *data = w83795_update_device(dev);
1317         long temp = temp_from_reg(data->temp[index][nr]);
1318
1319         if (nr == TEMP_READ)
1320                 temp += (data->temp_read_vrlsb[index] >> 6) * 250;
1321         return sprintf(buf, "%ld\n", temp);
1322 }
1323
1324 static ssize_t
1325 store_temp(struct device *dev, struct device_attribute *attr,
1326            const char *buf, size_t count)
1327 {
1328         struct sensor_device_attribute_2 *sensor_attr =
1329             to_sensor_dev_attr_2(attr);
1330         int nr = sensor_attr->nr;
1331         int index = sensor_attr->index;
1332         struct i2c_client *client = to_i2c_client(dev);
1333         struct w83795_data *data = i2c_get_clientdata(client);
1334         long tmp;
1335
1336         if (strict_strtol(buf, 10, &tmp) < 0)
1337                 return -EINVAL;
1338
1339         mutex_lock(&data->update_lock);
1340         data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
1341         w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
1342         mutex_unlock(&data->update_lock);
1343         return count;
1344 }
1345
1346
1347 static ssize_t
1348 show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
1349 {
1350         struct w83795_data *data = dev_get_drvdata(dev);
1351         int tmp;
1352
1353         if (data->enable_dts & 2)
1354                 tmp = 5;
1355         else
1356                 tmp = 6;
1357
1358         return sprintf(buf, "%d\n", tmp);
1359 }
1360
1361 static ssize_t
1362 show_dts(struct device *dev, struct device_attribute *attr, char *buf)
1363 {
1364         struct sensor_device_attribute_2 *sensor_attr =
1365             to_sensor_dev_attr_2(attr);
1366         int index = sensor_attr->index;
1367         struct w83795_data *data = w83795_update_device(dev);
1368         long temp = temp_from_reg(data->dts[index]);
1369
1370         temp += (data->dts_read_vrlsb[index] >> 6) * 250;
1371         return sprintf(buf, "%ld\n", temp);
1372 }
1373
1374 static ssize_t
1375 show_dts_ext(struct device *dev, struct device_attribute *attr, char *buf)
1376 {
1377         struct sensor_device_attribute_2 *sensor_attr =
1378             to_sensor_dev_attr_2(attr);
1379         int nr = sensor_attr->nr;
1380         struct w83795_data *data = dev_get_drvdata(dev);
1381         long temp = temp_from_reg(data->dts_ext[nr]);
1382
1383         return sprintf(buf, "%ld\n", temp);
1384 }
1385
1386 static ssize_t
1387 store_dts_ext(struct device *dev, struct device_attribute *attr,
1388            const char *buf, size_t count)
1389 {
1390         struct sensor_device_attribute_2 *sensor_attr =
1391             to_sensor_dev_attr_2(attr);
1392         int nr = sensor_attr->nr;
1393         struct i2c_client *client = to_i2c_client(dev);
1394         struct w83795_data *data = i2c_get_clientdata(client);
1395         long tmp;
1396
1397         if (strict_strtol(buf, 10, &tmp) < 0)
1398                 return -EINVAL;
1399
1400         mutex_lock(&data->update_lock);
1401         data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
1402         w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
1403         mutex_unlock(&data->update_lock);
1404         return count;
1405 }
1406
1407
1408 static ssize_t
1409 show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
1410 {
1411         struct w83795_data *data = dev_get_drvdata(dev);
1412         struct sensor_device_attribute_2 *sensor_attr =
1413             to_sensor_dev_attr_2(attr);
1414         int index = sensor_attr->index;
1415         int tmp;
1416
1417         if (data->temp_mode & (1 << index))
1418                 tmp = 3;        /* Thermal diode */
1419         else
1420                 tmp = 4;        /* Thermistor */
1421
1422         return sprintf(buf, "%d\n", tmp);
1423 }
1424
1425 /* Only for temp1-4 (temp5-6 can only be thermistor) */
1426 static ssize_t
1427 store_temp_mode(struct device *dev, struct device_attribute *attr,
1428                 const char *buf, size_t count)
1429 {
1430         struct i2c_client *client = to_i2c_client(dev);
1431         struct w83795_data *data = i2c_get_clientdata(client);
1432         struct sensor_device_attribute_2 *sensor_attr =
1433             to_sensor_dev_attr_2(attr);
1434         int index = sensor_attr->index;
1435         int reg_shift;
1436         unsigned long val;
1437         u8 tmp;
1438
1439         if (strict_strtoul(buf, 10, &val) < 0)
1440                 return -EINVAL;
1441         if ((val != 4) && (val != 3))
1442                 return -EINVAL;
1443
1444         mutex_lock(&data->update_lock);
1445         if (val == 3) {
1446                 /* Thermal diode */
1447                 val = 0x01;
1448                 data->temp_mode |= 1 << index;
1449         } else if (val == 4) {
1450                 /* Thermistor */
1451                 val = 0x03;
1452                 data->temp_mode &= ~(1 << index);
1453         }
1454
1455         reg_shift = 2 * index;
1456         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
1457         tmp &= ~(0x03 << reg_shift);
1458         tmp |= val << reg_shift;
1459         w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
1460
1461         mutex_unlock(&data->update_lock);
1462         return count;
1463 }
1464
1465
1466 /* show/store VIN */
1467 static ssize_t
1468 show_in(struct device *dev, struct device_attribute *attr, char *buf)
1469 {
1470         struct sensor_device_attribute_2 *sensor_attr =
1471             to_sensor_dev_attr_2(attr);
1472         int nr = sensor_attr->nr;
1473         int index = sensor_attr->index;
1474         struct w83795_data *data = w83795_update_device(dev);
1475         u16 val = data->in[index][nr];
1476         u8 lsb_idx;
1477
1478         switch (nr) {
1479         case IN_READ:
1480                 /* calculate this value again by sensors as sensors3.conf */
1481                 if ((index >= 17) &&
1482                     !((data->has_gain >> (index - 17)) & 1))
1483                         val *= 8;
1484                 break;
1485         case IN_MAX:
1486         case IN_LOW:
1487                 lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1488                 val <<= 2;
1489                 val |= (data->in_lsb[lsb_idx][nr] >>
1490                         IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]) & 0x03;
1491                 if ((index >= 17) &&
1492                     !((data->has_gain >> (index - 17)) & 1))
1493                         val *= 8;
1494                 break;
1495         }
1496         val = in_from_reg(index, val);
1497
1498         return sprintf(buf, "%d\n", val);
1499 }
1500
1501 static ssize_t
1502 store_in(struct device *dev, struct device_attribute *attr,
1503          const char *buf, size_t count)
1504 {
1505         struct sensor_device_attribute_2 *sensor_attr =
1506             to_sensor_dev_attr_2(attr);
1507         int nr = sensor_attr->nr;
1508         int index = sensor_attr->index;
1509         struct i2c_client *client = to_i2c_client(dev);
1510         struct w83795_data *data = i2c_get_clientdata(client);
1511         unsigned long val;
1512         u8 tmp;
1513         u8 lsb_idx;
1514
1515         if (strict_strtoul(buf, 10, &val) < 0)
1516                 return -EINVAL;
1517         val = in_to_reg(index, val);
1518
1519         if ((index >= 17) &&
1520             !((data->has_gain >> (index - 17)) & 1))
1521                 val /= 8;
1522         val = SENSORS_LIMIT(val, 0, 0x3FF);
1523         mutex_lock(&data->update_lock);
1524
1525         lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
1526         tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
1527         tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
1528         tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
1529         w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
1530         data->in_lsb[lsb_idx][nr] = tmp;
1531
1532         tmp = (val >> 2) & 0xff;
1533         w83795_write(client, W83795_REG_IN[index][nr], tmp);
1534         data->in[index][nr] = tmp;
1535
1536         mutex_unlock(&data->update_lock);
1537         return count;
1538 }
1539
1540
1541 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1542 static ssize_t
1543 show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf)
1544 {
1545         struct sensor_device_attribute_2 *sensor_attr =
1546             to_sensor_dev_attr_2(attr);
1547         int nr = sensor_attr->nr;
1548         struct w83795_data *data = w83795_update_pwm_config(dev);
1549         u16 val = data->setup_pwm[nr];
1550
1551         switch (nr) {
1552         case SETUP_PWM_UPTIME:
1553         case SETUP_PWM_DOWNTIME:
1554                 val = time_from_reg(val);
1555                 break;
1556         }
1557
1558         return sprintf(buf, "%d\n", val);
1559 }
1560
1561 static ssize_t
1562 store_sf_setup(struct device *dev, struct device_attribute *attr,
1563          const char *buf, size_t count)
1564 {
1565         struct sensor_device_attribute_2 *sensor_attr =
1566             to_sensor_dev_attr_2(attr);
1567         int nr = sensor_attr->nr;
1568         struct i2c_client *client = to_i2c_client(dev);
1569         struct w83795_data *data = i2c_get_clientdata(client);
1570         unsigned long val;
1571
1572         if (strict_strtoul(buf, 10, &val) < 0)
1573                 return -EINVAL;
1574
1575         switch (nr) {
1576         case SETUP_PWM_DEFAULT:
1577                 val = SENSORS_LIMIT(val, 0, 0xff);
1578                 break;
1579         case SETUP_PWM_UPTIME:
1580         case SETUP_PWM_DOWNTIME:
1581                 val = time_to_reg(val);
1582                 if (val == 0)
1583                         return -EINVAL;
1584                 break;
1585         }
1586
1587         mutex_lock(&data->update_lock);
1588         data->setup_pwm[nr] = val;
1589         w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
1590         mutex_unlock(&data->update_lock);
1591         return count;
1592 }
1593 #endif
1594
1595
1596 #define NOT_USED                        -1
1597
1598 /* Don't change the attribute order, _max, _min and _beep are accessed by index
1599  * somewhere else in the code */
1600 #define SENSOR_ATTR_IN(index) {                                         \
1601         SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
1602                 IN_READ, index), \
1603         SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
1604                 store_in, IN_MAX, index),                               \
1605         SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
1606                 store_in, IN_LOW, index),                               \
1607         SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
1608                 NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
1609         SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
1610                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1611                 index + ((index > 14) ? 1 : 0)) }
1612
1613 /* Don't change the attribute order, _beep is accessed by index
1614  * somewhere else in the code */
1615 #define SENSOR_ATTR_FAN(index) {                                        \
1616         SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
1617                 NULL, FAN_INPUT, index - 1), \
1618         SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
1619                 show_fan, store_fan_min, FAN_MIN, index - 1),   \
1620         SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
1621                 NULL, ALARM_STATUS, index + 31),                        \
1622         SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
1623                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 31) }
1624
1625 #define SENSOR_ATTR_PWM(index) {                                        \
1626         SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
1627                 store_pwm, PWM_OUTPUT, index - 1),                      \
1628         SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
1629                 show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
1630         SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
1631                 show_pwm, store_pwm, PWM_START, index - 1),             \
1632         SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
1633                 show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
1634         SENSOR_ATTR_2(pwm##index##_freq, S_IWUSR | S_IRUGO,     \
1635                 show_pwm, store_pwm, PWM_FREQ, index - 1),       \
1636         SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
1637                 show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
1638         SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO,                       \
1639                 show_pwm_mode, NULL, NOT_USED, index - 1),              \
1640         SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
1641                 show_fanin, store_fanin, FANIN_TARGET, index - 1) }
1642
1643 /* Don't change the attribute order, _beep is accessed by index
1644  * somewhere else in the code */
1645 #define SENSOR_ATTR_DTS(index) {                                        \
1646         SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
1647                 show_dts_mode, NULL, NOT_USED, index - 7),      \
1648         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
1649                 NULL, NOT_USED, index - 7),                             \
1650         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_dts_ext, \
1651                 store_dts_ext, DTS_CRIT, NOT_USED),                     \
1652         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1653                 show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
1654         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
1655                 store_dts_ext, DTS_WARN, NOT_USED),                     \
1656         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1657                 show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
1658         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1659                 show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
1660         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1661                 show_alarm_beep, store_beep, BEEP_ENABLE, index + 17) }
1662
1663 /* Don't change the attribute order, _beep is accessed by index
1664  * somewhere else in the code */
1665 #define SENSOR_ATTR_TEMP(index) {                                       \
1666         SENSOR_ATTR_2(temp##index##_type, S_IRUGO | (index < 4 ? S_IWUSR : 0), \
1667                 show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
1668         SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
1669                 NULL, TEMP_READ, index - 1),                            \
1670         SENSOR_ATTR_2(temp##index##_crit, S_IRUGO | S_IWUSR, show_temp, \
1671                 store_temp, TEMP_CRIT, index - 1),                      \
1672         SENSOR_ATTR_2(temp##index##_crit_hyst, S_IRUGO | S_IWUSR,       \
1673                 show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
1674         SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
1675                 store_temp, TEMP_WARN, index - 1),                      \
1676         SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
1677                 show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
1678         SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
1679                 show_alarm_beep, NULL, ALARM_STATUS,                    \
1680                 index + (index > 4 ? 11 : 17)),                         \
1681         SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
1682                 show_alarm_beep, store_beep, BEEP_ENABLE,               \
1683                 index + (index > 4 ? 11 : 17)),                         \
1684         SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
1685                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1686                 TEMP_PWM_ENABLE, index - 1),                            \
1687         SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
1688                 show_temp_pwm_enable, store_temp_pwm_enable,            \
1689                 TEMP_PWM_FAN_MAP, index - 1),                           \
1690         SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
1691                 show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
1692         SENSOR_ATTR_2(temp##index##_warn, S_IWUSR | S_IRUGO,            \
1693                 show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
1694         SENSOR_ATTR_2(temp##index##_warn_hyst, S_IWUSR | S_IRUGO,       \
1695                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
1696         SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
1697                 show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
1698         SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
1699                 show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
1700         SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
1701                 show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
1702         SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
1703                 show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
1704         SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
1705                 show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
1706         SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
1707                 show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
1708         SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
1709                 show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
1710         SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
1711                 show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
1712         SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
1713                 show_sf4_temp, store_sf4_temp, 0, index - 1),           \
1714         SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
1715                 show_sf4_temp, store_sf4_temp, 1, index - 1),           \
1716         SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
1717                 show_sf4_temp, store_sf4_temp, 2, index - 1),           \
1718         SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
1719                 show_sf4_temp, store_sf4_temp, 3, index - 1),           \
1720         SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
1721                 show_sf4_temp, store_sf4_temp, 4, index - 1),           \
1722         SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
1723                 show_sf4_temp, store_sf4_temp, 5, index - 1),           \
1724         SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
1725                 show_sf4_temp, store_sf4_temp, 6, index - 1) }
1726
1727
1728 static struct sensor_device_attribute_2 w83795_in[][5] = {
1729         SENSOR_ATTR_IN(0),
1730         SENSOR_ATTR_IN(1),
1731         SENSOR_ATTR_IN(2),
1732         SENSOR_ATTR_IN(3),
1733         SENSOR_ATTR_IN(4),
1734         SENSOR_ATTR_IN(5),
1735         SENSOR_ATTR_IN(6),
1736         SENSOR_ATTR_IN(7),
1737         SENSOR_ATTR_IN(8),
1738         SENSOR_ATTR_IN(9),
1739         SENSOR_ATTR_IN(10),
1740         SENSOR_ATTR_IN(11),
1741         SENSOR_ATTR_IN(12),
1742         SENSOR_ATTR_IN(13),
1743         SENSOR_ATTR_IN(14),
1744         SENSOR_ATTR_IN(15),
1745         SENSOR_ATTR_IN(16),
1746         SENSOR_ATTR_IN(17),
1747         SENSOR_ATTR_IN(18),
1748         SENSOR_ATTR_IN(19),
1749         SENSOR_ATTR_IN(20),
1750 };
1751
1752 static const struct sensor_device_attribute_2 w83795_fan[][4] = {
1753         SENSOR_ATTR_FAN(1),
1754         SENSOR_ATTR_FAN(2),
1755         SENSOR_ATTR_FAN(3),
1756         SENSOR_ATTR_FAN(4),
1757         SENSOR_ATTR_FAN(5),
1758         SENSOR_ATTR_FAN(6),
1759         SENSOR_ATTR_FAN(7),
1760         SENSOR_ATTR_FAN(8),
1761         SENSOR_ATTR_FAN(9),
1762         SENSOR_ATTR_FAN(10),
1763         SENSOR_ATTR_FAN(11),
1764         SENSOR_ATTR_FAN(12),
1765         SENSOR_ATTR_FAN(13),
1766         SENSOR_ATTR_FAN(14),
1767 };
1768
1769 static const struct sensor_device_attribute_2 w83795_temp[][28] = {
1770         SENSOR_ATTR_TEMP(1),
1771         SENSOR_ATTR_TEMP(2),
1772         SENSOR_ATTR_TEMP(3),
1773         SENSOR_ATTR_TEMP(4),
1774         SENSOR_ATTR_TEMP(5),
1775         SENSOR_ATTR_TEMP(6),
1776 };
1777
1778 static const struct sensor_device_attribute_2 w83795_dts[][8] = {
1779         SENSOR_ATTR_DTS(7),
1780         SENSOR_ATTR_DTS(8),
1781         SENSOR_ATTR_DTS(9),
1782         SENSOR_ATTR_DTS(10),
1783         SENSOR_ATTR_DTS(11),
1784         SENSOR_ATTR_DTS(12),
1785         SENSOR_ATTR_DTS(13),
1786         SENSOR_ATTR_DTS(14),
1787 };
1788
1789 static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
1790         SENSOR_ATTR_PWM(1),
1791         SENSOR_ATTR_PWM(2),
1792         SENSOR_ATTR_PWM(3),
1793         SENSOR_ATTR_PWM(4),
1794         SENSOR_ATTR_PWM(5),
1795         SENSOR_ATTR_PWM(6),
1796         SENSOR_ATTR_PWM(7),
1797         SENSOR_ATTR_PWM(8),
1798 };
1799
1800 static const struct sensor_device_attribute_2 w83795_tss[6] = {
1801         SENSOR_ATTR_2(temp1_source_sel, S_IWUSR | S_IRUGO,
1802                       show_temp_src, store_temp_src, NOT_USED, 0),
1803         SENSOR_ATTR_2(temp2_source_sel, S_IWUSR | S_IRUGO,
1804                       show_temp_src, store_temp_src, NOT_USED, 1),
1805         SENSOR_ATTR_2(temp3_source_sel, S_IWUSR | S_IRUGO,
1806                       show_temp_src, store_temp_src, NOT_USED, 2),
1807         SENSOR_ATTR_2(temp4_source_sel, S_IWUSR | S_IRUGO,
1808                       show_temp_src, store_temp_src, NOT_USED, 3),
1809         SENSOR_ATTR_2(temp5_source_sel, S_IWUSR | S_IRUGO,
1810                       show_temp_src, store_temp_src, NOT_USED, 4),
1811         SENSOR_ATTR_2(temp6_source_sel, S_IWUSR | S_IRUGO,
1812                       show_temp_src, store_temp_src, NOT_USED, 5),
1813 };
1814
1815 static const struct sensor_device_attribute_2 sda_single_files[] = {
1816         SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep,
1817                       store_chassis_clear, ALARM_STATUS, 46),
1818 #ifdef CONFIG_SENSORS_W83795_FANCTRL
1819         SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
1820                 store_fanin, FANIN_TOL, NOT_USED),
1821         SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
1822                       store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
1823         SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
1824                       store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
1825         SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
1826                       store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
1827 #endif
1828 };
1829
1830 static const struct sensor_device_attribute_2 sda_beep_files[] = {
1831         SENSOR_ATTR_2(intrusion0_beep, S_IWUSR | S_IRUGO, show_alarm_beep,
1832                       store_beep, BEEP_ENABLE, 46),
1833         SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_alarm_beep,
1834                       store_beep, BEEP_ENABLE, 47),
1835 };
1836
1837 /*
1838  * Driver interface
1839  */
1840
1841 static void w83795_init_client(struct i2c_client *client)
1842 {
1843         struct w83795_data *data = i2c_get_clientdata(client);
1844         static const u16 clkin[4] = {   /* in kHz */
1845                 14318, 24000, 33333, 48000
1846         };
1847         u8 config;
1848
1849         if (reset)
1850                 w83795_write(client, W83795_REG_CONFIG, 0x80);
1851
1852         /* Start monitoring if needed */
1853         config = w83795_read(client, W83795_REG_CONFIG);
1854         if (!(config & W83795_REG_CONFIG_START)) {
1855                 dev_info(&client->dev, "Enabling monitoring operations\n");
1856                 w83795_write(client, W83795_REG_CONFIG,
1857                              config | W83795_REG_CONFIG_START);
1858         }
1859
1860         data->clkin = clkin[(config >> 3) & 0x3];
1861         dev_dbg(&client->dev, "clkin = %u kHz\n", data->clkin);
1862 }
1863
1864 static int w83795_get_device_id(struct i2c_client *client)
1865 {
1866         int device_id;
1867
1868         device_id = i2c_smbus_read_byte_data(client, W83795_REG_DEVICEID);
1869
1870         /* Special case for rev. A chips; can't be checked first because later
1871            revisions emulate this for compatibility */
1872         if (device_id < 0 || (device_id & 0xf0) != 0x50) {
1873                 int alt_id;
1874
1875                 alt_id = i2c_smbus_read_byte_data(client,
1876                                                   W83795_REG_DEVICEID_A);
1877                 if (alt_id == 0x50)
1878                         device_id = alt_id;
1879         }
1880
1881         return device_id;
1882 }
1883
1884 /* Return 0 if detection is successful, -ENODEV otherwise */
1885 static int w83795_detect(struct i2c_client *client,
1886                          struct i2c_board_info *info)
1887 {
1888         int bank, vendor_id, device_id, expected, i2c_addr, config;
1889         struct i2c_adapter *adapter = client->adapter;
1890         unsigned short address = client->addr;
1891         const char *chip_name;
1892
1893         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
1894                 return -ENODEV;
1895         bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
1896         if (bank < 0 || (bank & 0x7c)) {
1897                 dev_dbg(&adapter->dev,
1898                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1899                         address, "bank");
1900                 return -ENODEV;
1901         }
1902
1903         /* Check Nuvoton vendor ID */
1904         vendor_id = i2c_smbus_read_byte_data(client, W83795_REG_VENDORID);
1905         expected = bank & 0x80 ? 0x5c : 0xa3;
1906         if (vendor_id != expected) {
1907                 dev_dbg(&adapter->dev,
1908                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1909                         address, "vendor id");
1910                 return -ENODEV;
1911         }
1912
1913         /* Check device ID */
1914         device_id = w83795_get_device_id(client) |
1915                     (i2c_smbus_read_byte_data(client, W83795_REG_CHIPID) << 8);
1916         if ((device_id >> 4) != 0x795) {
1917                 dev_dbg(&adapter->dev,
1918                         "w83795: Detection failed at addr 0x%02hx, check %s\n",
1919                         address, "device id\n");
1920                 return -ENODEV;
1921         }
1922
1923         /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
1924            should match */
1925         if ((bank & 0x07) == 0) {
1926                 i2c_addr = i2c_smbus_read_byte_data(client,
1927                                                     W83795_REG_I2C_ADDR);
1928                 if ((i2c_addr & 0x7f) != address) {
1929                         dev_dbg(&adapter->dev,
1930                                 "w83795: Detection failed at addr 0x%02hx, "
1931                                 "check %s\n", address, "i2c addr");
1932                         return -ENODEV;
1933                 }
1934         }
1935
1936         /* Check 795 chip type: 795G or 795ADG
1937            Usually we don't write to chips during detection, but here we don't
1938            quite have the choice; hopefully it's OK, we are about to return
1939            success anyway */
1940         if ((bank & 0x07) != 0)
1941                 i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
1942                                           bank & ~0x07);
1943         config = i2c_smbus_read_byte_data(client, W83795_REG_CONFIG);
1944         if (config & W83795_REG_CONFIG_CONFIG48)
1945                 chip_name = "w83795adg";
1946         else
1947                 chip_name = "w83795g";
1948
1949         strlcpy(info->type, chip_name, I2C_NAME_SIZE);
1950         dev_info(&adapter->dev, "Found %s rev. %c at 0x%02hx\n", chip_name,
1951                  'A' + (device_id & 0xf), address);
1952
1953         return 0;
1954 }
1955
1956 static int w83795_handle_files(struct device *dev, int (*fn)(struct device *,
1957                                const struct device_attribute *))
1958 {
1959         struct w83795_data *data = dev_get_drvdata(dev);
1960         int err, i, j;
1961
1962         for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
1963                 if (!(data->has_in & (1 << i)))
1964                         continue;
1965                 for (j = 0; j < ARRAY_SIZE(w83795_in[0]); j++) {
1966                         if (j == 4 && !data->enable_beep)
1967                                 continue;
1968                         err = fn(dev, &w83795_in[i][j].dev_attr);
1969                         if (err)
1970                                 return err;
1971                 }
1972         }
1973
1974         for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
1975                 if (!(data->has_fan & (1 << i)))
1976                         continue;
1977                 for (j = 0; j < ARRAY_SIZE(w83795_fan[0]); j++) {
1978                         if (j == 3 && !data->enable_beep)
1979                                 continue;
1980                         err = fn(dev, &w83795_fan[i][j].dev_attr);
1981                         if (err)
1982                                 return err;
1983                 }
1984         }
1985
1986         for (i = 0; i < ARRAY_SIZE(w83795_tss); i++) {
1987                 j = w83795_tss_useful(data, i);
1988                 if (!j)
1989                         continue;
1990                 err = fn(dev, &w83795_tss[i].dev_attr);
1991                 if (err)
1992                         return err;
1993         }
1994
1995         for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
1996                 err = fn(dev, &sda_single_files[i].dev_attr);
1997                 if (err)
1998                         return err;
1999         }
2000
2001         if (data->enable_beep) {
2002                 for (i = 0; i < ARRAY_SIZE(sda_beep_files); i++) {
2003                         err = fn(dev, &sda_beep_files[i].dev_attr);
2004                         if (err)
2005                                 return err;
2006                 }
2007         }
2008
2009 #ifdef CONFIG_SENSORS_W83795_FANCTRL
2010         for (i = 0; i < data->has_pwm; i++) {
2011                 for (j = 0; j < ARRAY_SIZE(w83795_pwm[0]); j++) {
2012                         err = fn(dev, &w83795_pwm[i][j].dev_attr);
2013                         if (err)
2014                                 return err;
2015                 }
2016         }
2017 #endif
2018
2019         for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
2020                 if (!(data->has_temp & (1 << i)))
2021                         continue;
2022 #ifdef CONFIG_SENSORS_W83795_FANCTRL
2023                 for (j = 0; j < ARRAY_SIZE(w83795_temp[0]); j++) {
2024 #else
2025                 for (j = 0; j < 8; j++) {
2026 #endif
2027                         if (j == 7 && !data->enable_beep)
2028                                 continue;
2029                         err = fn(dev, &w83795_temp[i][j].dev_attr);
2030                         if (err)
2031                                 return err;
2032                 }
2033         }
2034
2035         if (data->enable_dts) {
2036                 for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
2037                         if (!(data->has_dts & (1 << i)))
2038                                 continue;
2039                         for (j = 0; j < ARRAY_SIZE(w83795_dts[0]); j++) {
2040                                 if (j == 7 && !data->enable_beep)
2041                                         continue;
2042                                 err = fn(dev, &w83795_dts[i][j].dev_attr);
2043                                 if (err)
2044                                         return err;
2045                         }
2046                 }
2047         }
2048
2049         return 0;
2050 }
2051
2052 /* We need a wrapper that fits in w83795_handle_files */
2053 static int device_remove_file_wrapper(struct device *dev,
2054                                       const struct device_attribute *attr)
2055 {
2056         device_remove_file(dev, attr);
2057         return 0;
2058 }
2059
2060 static void w83795_check_dynamic_in_limits(struct i2c_client *client)
2061 {
2062         struct w83795_data *data = i2c_get_clientdata(client);
2063         u8 vid_ctl;
2064         int i, err_max, err_min;
2065
2066         vid_ctl = w83795_read(client, W83795_REG_VID_CTRL);
2067
2068         /* Return immediately if VRM isn't configured */
2069         if ((vid_ctl & 0x07) == 0x00 || (vid_ctl & 0x07) == 0x07)
2070                 return;
2071
2072         data->has_dyn_in = (vid_ctl >> 3) & 0x07;
2073         for (i = 0; i < 2; i++) {
2074                 if (!(data->has_dyn_in & (1 << i)))
2075                         continue;
2076
2077                 /* Voltage limits in dynamic mode, switch to read-only */
2078                 err_max = sysfs_chmod_file(&client->dev.kobj,
2079                                            &w83795_in[i][2].dev_attr.attr,
2080                                            S_IRUGO);
2081                 err_min = sysfs_chmod_file(&client->dev.kobj,
2082                                            &w83795_in[i][3].dev_attr.attr,
2083                                            S_IRUGO);
2084                 if (err_max || err_min)
2085                         dev_warn(&client->dev, "Failed to set in%d limits "
2086                                  "read-only (%d, %d)\n", i, err_max, err_min);
2087                 else
2088                         dev_info(&client->dev, "in%d limits set dynamically "
2089                                  "from VID\n", i);
2090         }
2091 }
2092
2093 /* Check pins that can be used for either temperature or voltage monitoring */
2094 static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
2095                                      int temp_chan, int in_chan)
2096 {
2097         /* config is a 2-bit value */
2098         switch (config) {
2099         case 0x2: /* Voltage monitoring */
2100                 data->has_in |= 1 << in_chan;
2101                 break;
2102         case 0x1: /* Thermal diode */
2103                 if (temp_chan >= 4)
2104                         break;
2105                 data->temp_mode |= 1 << temp_chan;
2106                 /* fall through */
2107         case 0x3: /* Thermistor */
2108                 data->has_temp |= 1 << temp_chan;
2109                 break;
2110         }
2111 }
2112
2113 static int w83795_probe(struct i2c_client *client,
2114                         const struct i2c_device_id *id)
2115 {
2116         int i;
2117         u8 tmp;
2118         struct device *dev = &client->dev;
2119         struct w83795_data *data;
2120         int err;
2121
2122         data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
2123         if (!data) {
2124                 err = -ENOMEM;
2125                 goto exit;
2126         }
2127
2128         i2c_set_clientdata(client, data);
2129         data->chip_type = id->driver_data;
2130         data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
2131         mutex_init(&data->update_lock);
2132
2133         /* Initialize the chip */
2134         w83795_init_client(client);
2135
2136         /* Check which voltages and fans are present */
2137         data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1)
2138                      | (w83795_read(client, W83795_REG_VOLT_CTRL2) << 8);
2139         data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1)
2140                       | (w83795_read(client, W83795_REG_FANIN_CTRL2) << 8);
2141
2142         /* Check which analog temperatures and extra voltages are present */
2143         tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
2144         if (tmp & 0x20)
2145                 data->enable_dts = 1;
2146         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 5, 16);
2147         w83795_apply_temp_config(data, tmp & 0x3, 4, 15);
2148         tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
2149         w83795_apply_temp_config(data, tmp >> 6, 3, 20);
2150         w83795_apply_temp_config(data, (tmp >> 4) & 0x3, 2, 19);
2151         w83795_apply_temp_config(data, (tmp >> 2) & 0x3, 1, 18);
2152         w83795_apply_temp_config(data, tmp & 0x3, 0, 17);
2153
2154         /* Check DTS enable status */
2155         if (data->enable_dts) {
2156                 if (1 & w83795_read(client, W83795_REG_DTSC))
2157                         data->enable_dts |= 2;
2158                 data->has_dts = w83795_read(client, W83795_REG_DTSE);
2159         }
2160
2161         /* Report PECI Tbase values */
2162         if (data->enable_dts == 1) {
2163                 for (i = 0; i < 8; i++) {
2164                         if (!(data->has_dts & (1 << i)))
2165                                 continue;
2166                         tmp = w83795_read(client, W83795_REG_PECI_TBASE(i));
2167                         dev_info(&client->dev,
2168                                  "PECI agent %d Tbase temperature: %u\n",
2169                                  i + 1, (unsigned int)tmp & 0x7f);
2170                 }
2171         }
2172
2173         data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
2174
2175         /* pwm and smart fan */
2176         if (data->chip_type == w83795g)
2177                 data->has_pwm = 8;
2178         else
2179                 data->has_pwm = 2;
2180
2181         /* Check if BEEP pin is available */
2182         if (data->chip_type == w83795g) {
2183                 /* The W83795G has a dedicated BEEP pin */
2184                 data->enable_beep = 1;
2185         } else {
2186                 /* The W83795ADG has a shared pin for OVT# and BEEP, so you
2187                  * can't have both */
2188                 tmp = w83795_read(client, W83795_REG_OVT_CFG);
2189                 if ((tmp & OVT_CFG_SEL) == 0)
2190                         data->enable_beep = 1;
2191         }
2192
2193         err = w83795_handle_files(dev, device_create_file);
2194         if (err)
2195                 goto exit_remove;
2196
2197         if (data->chip_type == w83795g)
2198                 w83795_check_dynamic_in_limits(client);
2199
2200         data->hwmon_dev = hwmon_device_register(dev);
2201         if (IS_ERR(data->hwmon_dev)) {
2202                 err = PTR_ERR(data->hwmon_dev);
2203                 goto exit_remove;
2204         }
2205
2206         return 0;
2207
2208 exit_remove:
2209         w83795_handle_files(dev, device_remove_file_wrapper);
2210         kfree(data);
2211 exit:
2212         return err;
2213 }
2214
2215 static int w83795_remove(struct i2c_client *client)
2216 {
2217         struct w83795_data *data = i2c_get_clientdata(client);
2218
2219         hwmon_device_unregister(data->hwmon_dev);
2220         w83795_handle_files(&client->dev, device_remove_file_wrapper);
2221         kfree(data);
2222
2223         return 0;
2224 }
2225
2226
2227 static const struct i2c_device_id w83795_id[] = {
2228         { "w83795g", w83795g },
2229         { "w83795adg", w83795adg },
2230         { }
2231 };
2232 MODULE_DEVICE_TABLE(i2c, w83795_id);
2233
2234 static struct i2c_driver w83795_driver = {
2235         .driver = {
2236                    .name = "w83795",
2237         },
2238         .probe          = w83795_probe,
2239         .remove         = w83795_remove,
2240         .id_table       = w83795_id,
2241
2242         .class          = I2C_CLASS_HWMON,
2243         .detect         = w83795_detect,
2244         .address_list   = normal_i2c,
2245 };
2246
2247 static int __init sensors_w83795_init(void)
2248 {
2249         return i2c_add_driver(&w83795_driver);
2250 }
2251
2252 static void __exit sensors_w83795_exit(void)
2253 {
2254         i2c_del_driver(&w83795_driver);
2255 }
2256
2257 MODULE_AUTHOR("Wei Song, Jean Delvare <khali@linux-fr.org>");
2258 MODULE_DESCRIPTION("W83795G/ADG hardware monitoring driver");
2259 MODULE_LICENSE("GPL");
2260
2261 module_init(sensors_w83795_init);
2262 module_exit(sensors_w83795_exit);